Question

Connection to DB2 to make a query

Asked by: khodaj

Hi,
I have started to create a code to connect to a DB2 from Access using VBA code.
I have the connection string which I had used from online, but I am not able to connect to DB2.  Is there anything else in the code that I'm missing which I should be putting in?

Because the Access file will be distributed to users, we can not go to the ODBC settings and hard code the username and password there, which is why we have to connect using the user's user id and password.

Thanks!

Function ADOConnection() As Boolean
 
   Dim cnn As ADODB.connection
   Dim connection As Boolean
 
   Set cnn = New ADODB.connection
   Set cnn = CreateObject("ADODB.Connection")
   cnn.Open "EWPROD", Form_LoginForm.txtbxLoginID, Form_LoginForm.txtbxPW
   'On Error GoTo Err_Execute
   
   ' Find out if the attempt to connect worked.
   If cnn.State = adStateOpen Then
   Else
      MsgBox "Sorry. The connection was not established."
   End If
    
    connection = True
    
 Exit Function
 
'Err_Execute:
'    MsgBox "Connecting to the database failed."
'    connection = False
 
End Function

                                  
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Asked On
2008-12-16 at 06:42:08ID23988540
Tags

Microsoft

,

Access

,

DB2

Topics

Microsoft Access Database

,

DB2 Database

,

Visual Basic Programming

Participating Experts
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Comments
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Answers

 

by: momi_sabagPosted on 2008-12-16 at 06:45:48ID: 23183967

which error do you receive?
are you sure you have db2 odbc drivers installed?

 

by: peter57rPosted on 2008-12-16 at 06:48:14ID: 23183998

I can't see anywhere where you have defined the connection to the database.

http://www.connectionstrings.com/ibm-db2

 

by: khodajPosted on 2008-12-16 at 06:49:28ID: 23184014

Yes I do have the DB2 drivers installed.  I am able to make pass thru queries and run queries to the tables I am making on a daily basis.
The error which I receive is:
Run-Time Error '-2147467259 (80004005)':
[Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified.

 

by: momi_sabagPosted on 2008-12-16 at 06:51:27ID: 23184037

well
since you don't have a datasource you need to send in the connection string the ip address of the db2 server and the port number

 

by: BadotzPosted on 2008-12-16 at 07:25:12ID: 23184385

This has helped me with connection strings in the past:

 1. In Notepad, or any other text editor, create a file named Temp.udl  

 2. Leave the file empty and save it to the Desktop

 3. Double-click the Temp.udl file

 4. The Data Link Properties dialog box appears

 5. In the Data Link Properties dialog box, click Provider. Select the appropriate provider from the list

 6. Click Connection and select the corresponding name of the server and the database
    Type the User Name and the Password
 
 7. Click Test Connection to test the connection

 8. Click OK

 9. Right-click Temp.udl and click 'Open With'
   
    If Notepad shows up as an option, click it, otherwise click 'Choose Program' and navigate
    through the list to notepad and select it

10. Copy the connection string to your application

 

by: khodajPosted on 2008-12-16 at 11:08:05ID: 23186714

Badotz,
I think what you have proposed is it!
I tried what you had stated.  My connection string was generated as the code below:

How can I create the proper connection string with this information?  
The cnn.open is not the proper function which will pass all of these parameters.

Thanks.

Provider=MSDASQL.1;Persist Security Info=False;User ID=myID;Data Source=EWPROD

                                              
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by: BadotzPosted on 2008-12-16 at 11:38:33ID: 23187066

>>How can I create the proper connection string with this information?  

That *is* the correct connection string.

>>The cnn.open is not the proper function which will pass all of these parameters.

I don't understand.

 

by: tliottaPosted on 2008-12-16 at 17:49:05ID: 23190122

> Provider=MSDASQL.1

I wouldn't expect that this is the correct provider if a DB2 database will be the target. I'd expect an IBM driver rather than a Microsoft one.

For me, the provider would show as [Provider=IBMDASQL.DataSource.1].

However, I don't see anywhere in the thread that says where the target DB2 is installed. What DB2 are you going after? (And is anybody aware of a Microsoft driver actually working for the DB2 that is indicated?)

Tom

 

by: BadotzPosted on 2008-12-16 at 19:49:00ID: 23190573

If he selected the DB2 driver during the .UDL file thing, then that is what is reported. It doesn't make it up ;-)

 

by: khodajPosted on 2008-12-17 at 13:08:01ID: 23198207

I'm able to make a connection, but I'm still not able to run the query...
After debugging, what I noticed was that it asks for my user ID and password at the pass thru query.
If I embed my userID and password in the pass thru query, then it runs through ok.  
The current ODBC Connection String in the Passthru query is attached:
How can I embed the userid and password within the passthru query so I can run it?  
If I'm asking a different question, please let me know and I'll gladly open another question.

Thanks.

ODBC;DSN=EWPORD;MODE=SHARE;DBALIAS=EWPROD;UseriD=[myID];PASSWORD = [mypassword];DB2DEGREE=ANY;UNDERSCORE=0;TXNISOLATION=1;TABLETYPE='TABLE','SYSTEM TABLE','VIEW','ALIAS';PATCH1=1158;LONGDATACOMPAT=1;EARLYCLOSE=0;CURSORHOLD=0;BITDATA=0;

                                              
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by: BadotzPosted on 2008-12-17 at 13:25:10ID: 23198351

It is hard to say out of context. How is the connection string built?

 

by: khodajPosted on 2008-12-18 at 04:33:12ID: 23202705

This connection string is built automatically in Access.
1.  Create a passthru query.
2.  Right click and enter design view of the query.
3.  Right click and enter Proprty.
4.  Have the cursor be in ODBC Connect String textbox.
5.  Click on "..."
6.  ODBC Data Source is opened prompting you to enter the connection.
7.  After selecting your data source, you click ok and your connection string is built for you for the passthru query by Access.
 

 

by: khodajPosted on 2008-12-18 at 07:29:18ID: 23204252

I think I got it from a previous question.  Thanks for your help everyone!!
http://www.experts-exchange.com/Microsoft/Development/MS_Access/Q_22740051.html

 

by: khodajPosted on 2008-12-18 at 07:30:16ID: 31526403

Thanks!!  Great solution!

 

by: BadotzPosted on 2008-12-18 at 08:38:24ID: 23204937

No worries - glad to help.

20120131-EE-VQP-002

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